lunedì 22 gennaio 2007


I ricercatori dell'universita' di Wageningen, in Olanda, hanno scoperto che la regolare assunzione di acido folico fa "ringiovanire" il cervello fino a sette anni. Lo studio ha coinvolto 800 individui, sia uomini che donne, tra i 50 ed i 70 anni. L'acido folico è conosciuto per la sua proprietà di prevenire malformazioni nei bambini durante la gravidanza (in gravidanza se ne consiglia l' assunzione di 400 μg/die al fine di prevenire la comparsa di spina bifida, e, nell'allattamento, 300 μg/die).
I soggetti studiati sono stati divisi dai ricercatori olandesi in due gruppi: ad un gruppo è stata somministrata una dose giornaliera di 800 mg di acido folico per tre anni; l'altro gruppo ha ricevuto invece un placebo.
Al termine di tale esperimento sono stati effettuati su tutti i soggetti dei test i quali hanno dimostrato che nei soggetti che avevano assunto l'acido folico la memoria era "ringiovanita" da 5 a 7 anni; mentre per quanto riguarda velocita' di reazione ed elaborazione delle informazioni, gli anni guadagnati in media erano due. Negli Stati Uniti l'acido folico è normalmente aggiunto alla farina; l' Europa ha rifiutato di usarlo come additivo.


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